>> reporter: well, martin, the white house on defense, particularly during that briefing today. i asked white house press secretary jay carney about the transparency or lack thereof, given the manner in which the public is learning about this drone policy. i can tell you that carnie really kept coming back to two many points. one, that congress has authorized military force against suspected al qaeda operatives, and, two, that the president is mindful of the limits of his authority. but he certainly got a number of questions about this today, martin, and we expect them to get even more in the future. but again, he kept coming back to those two main points. there were a lot of unanswered questions though, and one of the big ones was the drone policy describes this type of threat as someone who is imminent, someone who poses an imminent threat to the united states. carney got a lot of questions about what specifically imminent means, what do you define that? that is one of the big questions that remains unanswered. i would expect something that he will get a number of questions ab